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Amazon SESSendGrid
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Websiteamazon.com/...sendgrid.com
Technical details
SMTP supportYesYes
RealtimeYesYes
Send transactional emailsYesYes
Incoming Email SupportYesYes Parse inbound email, including attachments and content. See docs.sendgrid.com for webhook examples. Supported by Griddler: https://github.com/thoughtbot/griddler
Send bulk emailsYesYes
SPFYes Yes Instructions on how to set it up on your domain are given.Yes
Automatic DKIM signingYesYes
Personalized DKIM for free (no more "on behalf of")YesYes Upgrade to a Silver plan or higher to get personalized DKIM
Open TrackingNoYes
Click TrackingNoYes
Clicks Details (per Link, etc.)Yes Via real-time Event API webhook
Message PersonalizationNoYes
Conditional Personalization (if/else)
WYSIWYG Newsletter EditorNoYes +$0,25 per thousand, in addition to monthly package
HTML Content Templates (WYSIWYG Editor)NoYes
Dedicated IP availableNo $25 per month for EC2 usersYes
Pricing
Free plan62,000 emails per month for EC2 users45 day free trial, 12,000 per month, 400 emails per day
Price$ 0.1 per thousand, plus traffic charges. $0.12 per GB of attachments sent.$ 0.57 to $0.80 USD per thousand
Custom-Pricing For Big SendersNoYes
CurrencyUSDUSD
Cancellation policyPay for what you send; no required contract or commitments.Cancel at any time, no contract
API
REST APIYesYes Yes, for our Bronze plan and higher (and Free plan too)
Event APIYes you can set up Amazon SES to publish email sending events to Amazon CloudWatch or Amazon KinesisYes Yes, for our Silver plan and higher (and Free plan too)
Manage contacts through APIYes See our Newsletter API at http://docs.sendgrid.com
Send email through APIYesYes
Support
24/7 SupportYes Basic: Included, Developer: $49/month, Business & Enterprise prorated.Yes Online ticket generation.
Dedicated Support TeamYesYes
Phone Support- Available with paid support planYes During regular business hours for all plan levels, including "Free." Critical and Escalation Support available 24/7
HeadquarteredSeattle, WACO - CA
Additional
Multi-user LoginYesYes
Prioritize emails
User-Agent TrackingYes
Plugins
LanguagesEnglish, French, German, Japanese, SpanishEnglish
Sample CustomersSIEMENS, HBO, Vodafone, AllerganSpotify, Foursquare, Pandora, Hootsuite, Uber, Kickstarter, Air BnB, GitHub
Sample Integration PartnersWindows Azure, HP Cloud, Softlayer, Rackspace, Heroku, Engineyard, Cloudbees
Websiteamazon.com/...sendgrid.com