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SendGridMailgunPostmarkAmazon SESMandrill
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Websitesendgrid.commailgun.compostmarkapp.comamazon.com/...mandrill.com
Unlimited Free Emails
Startups plan
Price$ 0.57 to $0.80 USD per thousand$ 0.1 to $0.50 per thousand$ 0.5 to1.50 USD per thousand$ 0.1 per thousand, plus traffic charges. $0.12 per GB of attachments sent.$ 10 for cheapest MailChimp account + $20 per month minimum charge
Free plan45 day free trial, 12,000 per month, 400 emails per day10,000 free per month25,000 emails, no time limit62,000 emails per month for EC2 usersN/A (Since re-integration with Mailchimp)
SMTP supportYesYesYes Globally redundant SMTP and API infrastructureYesYes
Personalized DKIM for free (no more "on behalf of")Yes Upgrade to a Silver plan or higher to get personalized DKIMYesYesYesYes
Clicks Details (per Link, etc.)Yes Via real-time Event API webhookYes Reporting available both through Control Panel and API
Conditional Personalization (if/else)YesYes
WYSIWYG Newsletter EditorYes +$0,25 per thousand, in addition to monthly packageNoNoNoYes
Dedicated IP availableYesYes $59 per monthNo Shared IPs. They believe shared IPs are preferable to dedicated.No $25 per month for EC2 usersYes $29 per month
Cancellation policyCancel at any time, no contractCancel 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.Pay for what you send; no required contract or commitments.Cancel at any time, no contract
REST APIYes Yes, for our Bronze plan and higher (and Free plan too)YesYesYesYes
Event APIYes Yes, for our Silver plan and higher (and Free plan too)YesYesYes you can set up Amazon SES to publish email sending events to Amazon CloudWatch or Amazon KinesisYes
Send email through APIYesYesYesYesYes
Incoming Email SupportYes Parse inbound email, including attachments and content. See docs.sendgrid.com for webhook examples. Supported by Griddler: https://github.com/thoughtbot/griddlerYes 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 Handles inbound, can be parsed by griddler: https://github.com/thoughtbot/griddlerYesYes Parses inbound, can be handled by griddler: https://github.com/thoughtbot/griddler
Support
24/7 SupportYes Online ticket generation.Yes Online form submission.Yes Support by email around the clock. Live chat.Yes Basic: Included, Developer: $49/month, Business & Enterprise prorated.
Dedicated Support TeamYesYesYesYesYes
Phone SupportYes During regular business hours for all plan levels, including "Free." Critical and Escalation Support available 24/7- For First-class plansNo- Available with paid support planNo
Multi-user LoginYesNoYesNo
LanguagesEnglishEnglish, French, RussianEnglishEnglish, French, German, Japanese, SpanishEnglish
Prioritize emailsYes Add preferred time of delivery which can prioritize or schedule for later.Yes Use the important option (API) or X-MC-Important (SMTP) to flag important messages and give them priority over other messages you're currently sending. https://mandrill.zendesk.com/hc/en-us/articles/205582647
PluginsYes Most major languages and frameworksYes http://developer.postmarkapp.com/developer-libs.htmlYes Most major languages, frameworks, and platforms
Sample CustomersSpotify, Foursquare, Pandora, Hootsuite, Uber, Kickstarter, Air BnB, GitHubGithub, Heroku, Uservoice, Stripe, 37 Signals, Parse, Adroll, PagerdutyIKEA, Minecraft, Livestream, Unicef, Litmus, Salesforce-DeskSIEMENS, HBO, Vodafone, Allergan
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Stores Outgoing Emails for Later ViewingNoYes Stores for 45 DaysYes May be an additional charge.
Websitesendgrid.commailgun.compostmarkapp.comamazon.com/...mandrill.com