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SMTP Relay Service Providers

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Comparison of top SMTP Relay Services, with their popular features and website links. The comparison contains both open source(free) and commercial(paid) software.

This detailed comparison chart will help you to choose your cloud based SMTP Relay email solution for bulk email or transactional email. Most of them have a free plan, it will help you to test several email sender before deciding which one is the best for your needs.

Link
Mail250Amazon SESMailjetMailgunSendGridPostmarkSparkPostMailtrap
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Websitemail250.comamazon.com/...mailjet.commailgun.comsendgrid.compostmarkapp.comsparkpost.commailtrap.io
Pricing
Price$ 20 (Send 24k/ Day) $50 (Send 60k/ Day) $150 (Send 120k /Day)$ 0.1 per thousand, plus traffic charges. $0.12 per GB of attachments sent.$ 0.18 to $0.50 per thousand$ 0.1 to $0.50 per thousand$ 0.57 to $0.80 USD per thousand$ 0.5 to1.50 USD per thousand$ 0.2 to $0.15 per thousand, depending on volume$ 10 (10,000 emails/mo), $85 (100,000 emails/mo), $750 (1,500,000 emails/mo)
Free planYes, 10K emails free62,000 emails per month for EC2 users6,000 emails per month, max 200 per day10,000 free per month45 day free trial, 12,000 per month, 400 emails per day25,000 emails, no time limit15,000 emails per month1,000 emails/mo
Startups planYesYes
Cancellation policyCancel any time, no contractPay for what you send; no required contract or commitments.Cancel any time, no contractCancel any time, no contractCancel at any time, no contractCancellation must be issued via the Service. Any cancellation issued must be done three (3) days prior to the end of the contract term.Cancel any time, no contract, month-to-monthCancel any time on the Mailtrap website or via email
Unlimited Free EmailsYou can upload unlimited contacts.
Features
SMTP supportYesYesYesYesYesYes Globally redundant SMTP and API infrastructureYesYes
Personalized DKIM for free (no more "on behalf of")YesYesYesYesYes Upgrade to a Silver plan or higher to get personalized DKIMYesYesYes
Clicks Details (per Link, etc.)YesYesYes Reporting available both through Control Panel and APIYes Via real-time Event API webhookYes Through webhooks real-time event reporting.Yes
Conditional Personalization (if/else)Yes- Yes but, not through web newsletter editor, only by using the APIYesYes
WYSIWYG Newsletter EditorYesNoYes Available for free, with any plan (Free plan included)NoYes +$0,25 per thousand, in addition to monthly packageNo- only with "Elite for Marketers" plan
Dedicated IP availableYesNo $25 per month for EC2 usersYes With our Silver, Gold, Platinum and Diamond Plans, you can ask for a Dedicated IP address.Yes $59 per monthYesNo Shared IPs. They believe shared IPs are preferable to dedicated.YesYes
REST APIYesYesYesYesYes Yes, for our Bronze plan and higher (and Free plan too)YesYes
Event APIYesYes you can set up Amazon SES to publish email sending events to Amazon CloudWatch or Amazon KinesisYes For every plan, you can get every event (open, click, bounce...) in real timeYesYes Yes, for our Silver plan and higher (and Free plan too)YesYes Via Webhooks
Send email through APIYesYesYes Only by one HTTP call http://dev.mailjet.com/guides/send-api-guide/YesYesYesYesYes
Incoming Email SupportNoYesYes Using the Parse API you can get the content of an incomming email POSTed by HTTP on a server : dev.mailjet.com/guides/parse-api-guide/Yes Parse emails, including attachements and quoted text. Easily forward using different expression matches, including regex, and POST to HTTP. Supported by Griddler: https://github.com/thoughtbot/griddlerYes Parse inbound email, including attachments and content. See docs.sendgrid.com for webhook examples. Supported by Griddler: https://github.com/thoughtbot/griddlerYes Handles inbound, can be parsed by griddler: https://github.com/thoughtbot/griddlerYes
Stores Outgoing Emails for Later ViewingYesNoYes Stores for 45 DaysYes 60-days email logs
Explicit/sexual content policy ?No
Needs time to approve account before sending ?No. Domain approval is not required.Mailtrap users get asked to verify their domain
Asks to create SPF and DKIM recordsYes Optional
LanguagesEnglishEnglish, French, German, Japanese, SpanishEnglish, French, German, SpanishEnglish, French, RussianEnglishEnglishEnglishEnglish
Multi-user LoginYesYesYesYesNoYes
Prioritize emailsNoYes Email Priority Management is handled on Mailjet with X-Mailjet email headers : http://www.mailjet.com/docs/email-priority-managementYes Add preferred time of delivery which can prioritize or schedule for later.Yes
PluginsYes WordPressYes Prestashop, Wordpress, Dotclear, SPIP, Joomla, DrupalYes Most major languages and frameworksYes http://developer.postmarkapp.com/developer-libs.htmlYes Node, PHP, Python & More, see http://developer.sparkpost.comYes 20+ code integrations like Ruby, Python, PHP, Node.js, Java, C#, and more
Support
24/7 SupportYesYes Basic: Included, Developer: $49/month, Business & Enterprise prorated.Yes Across 3 Global Time Zones - Online ticket generationYes Online form submission.Yes Online ticket generation.Yes Support by email around the clock. Live chat.YesNo
Dedicated Support TeamYesYesYesYesYesYesYesYes
Phone Support-- Available with paid support plan- Available for VIP clients- For First-class plansYes During regular business hours for all plan levels, including "Free." Critical and Escalation Support available 24/7NoYesNo
Sample CustomersDLF, Vodafone, etcSIEMENS, HBO, Vodafone, AllerganTAG Hauer, MIT, Fotolia, TheFancy, Jolicloud, Readability, Sketchfab, Prestashop, Amnesty International...Github, Heroku, Uservoice, Stripe, 37 Signals, Parse, Adroll, PagerdutySpotify, Foursquare, Pandora, Hootsuite, Uber, Kickstarter, Air BnB, GitHubIKEA, Minecraft, Livestream, Unicef, Litmus, Salesforce-DeskPinterest, Zillow, Financial Times of London, Career BuilderAdobe, ATLASSIAN, Calendly, Yelp, UserTesting
Websitemail250.comamazon.com/...mailjet.commailgun.comsendgrid.compostmarkapp.comsparkpost.commailtrap.io
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Nov. 28th 2022 2:38:57 PM
Mar. 25th 2020 12:17:11 PM
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User reviews and comments

  • gdouvet on Oct. 2nd 2017 9:56:44 AM

    Solution efficace et support réactif. Je recommande

  • edrokov on Sep. 4th 2017 9:49:40 PM
    commented on Mailjet

    So far my experience is extremely ignorant, lazy and helpless first line support basically doing nothing. One ticket resolving takes more than 1 week!

  • Paul on Mar. 25th 2016 9:29:58 PM
    commented on SparkPost

    AVOID SPARKPOST SparkPost is a new Scammer in the place of Email Marketing. They canceled our account only 48 hours after payment claiming that our complaint rate was too high. Out of 27.000 emails sent, we had 150 bounces = 0.5% which is a very low bounce rate in any given industry. (we have made a screenshot showing these data). The way they communicate with us is like a Police Investigation, or even worst since they assume clearly that you are guilty! On Top of this, You can see on the Home Page of their website that they use very poor Marketing Pratices : Welcome Mandrill Customers! Here’s your migration guide. They want to take over the customers of Mandrill, their main competitor, with agressive Marketing. Don't be fooled by their low prices, there is NO service behind, and they use scammer practices

  • Maffoo on Feb. 6th 2016 1:40:45 PM
    commented on Mailgun

    Actually, screw my previous comment. I take it back. They require business verification, and you have to jump through all these hoops for them to allow you to use their service, then beg them "oh pretty please" let me use your service oh wise Rackspace gods. Sod that, no time for that.

  • Maffoo on Feb. 6th 2016 1:38:09 PM
    commented on Mailjet

    Update: managed to get second email confirmation working after being in touch with them via twitter, and decided to go with them due to mailgun's annoying company verification stuff which put me off.

  • Maffoo on Feb. 1st 2016 12:29:54 PM
    commented on Mailgun

    This is definitely my favourite of the lot. Very good service, as to be expected from Rackspace. But also pretty cheap, which isn't so much to be expected from them!

  • Maffoo on Feb. 1st 2016 10:50:54 AM
    commented on Mailjet

    I tried to add a second email to my account and it went straight into spam. Then the confirmation link inside didn't work (404). Then whitelisting my local domain didn't work, so now I'm stuck. Therefore, I have no interest in going any further as I can't be bothered waiting around for them to fix things.

  • Rob Pearl on Dec. 29th 2015 11:29:34 PM
    commented on SparkPost

    great but they dont mention your DAILY LIMITS even on a paid plan

  • Gagan on Dec. 10th 2015 7:29:49 PM
    commented on SparkPost

    I bought sparkpost and they have some problem working with interspire which i got to know later. I asked them to give me time to fix things as i use interspire and you are the only one who need a patch to be added. Neither they refunded and keep billing me for no use. and nor they replied to my request. Handle with care.