| Logo |  |  |  |  |  |  |  |  |  |  |
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| Technical details | | | | | | | | | | |
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| SMTP support | No | Yes | Yes | Yes | No | Yes | No | Yes | Yes | Yes |
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| Realtime | Yes | Yes | | | No | Yes | Yes | No | Yes | Yes |
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| Send transactional emails | Yes | Yes | | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
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| Send bulk emails | Yes | Yes | | | | Yes | Yes | No | Yes | Yes |
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| SPF | No DIY | Yes | | | | Yes | | | Yes | |
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| Automatic DKIM signing | No recommends not to sign security critical headers | Yes | Yes | | | Yes | No | Yes | Yes | Yes |
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| Open Tracking | No | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | No only through software partners |
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| Click Tracking | No | Yes | Yes | Yes | Yes | Yes | No | No | Yes | No only through software partners |
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| WYSIWYG Newsletter Editor | No | | | | | Yes | | No | | |
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| Dedicated IP available | No | Yes but not as good as our shared cluster since shared cluster is way ahead of state of the art | | | No | Yes | Yes | Yes | Yes | Yes |
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| Pricing | | | | | | | | | | |
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| Free plan | 2,000 emails per day for EC2 users | 1,000 emails, no time limit | first 1000 | 200 emails per month | Yes; Mailchimp don't charge on top of Amazon's rates. | 6,000 emails per month, max 200 per 24 hours | 30 emails per day | 1,000 emails, no time limit | 200 emails per day | 30 day money back |
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| Price | 0.1 USD per thousand, plus traffic charges | 0.28 USD to $0.50 per thousand | 0.4 USD to $1 per thousand | 1.02 USD to $7 per thousand | 0 USD (free for paying mailchimp customers) (amazon SES rates apply) | 0 USD to $0.9 per thousand | 0.4 USD to $1.00 per thousand | 1.5 USD per thousand | 0.45 USD to $1 USD per thousand | 0.3 USD to $2.50 per thousand |
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| Currency | USD | USD, EUR | USD | USD | | USD, EUR, GBP | USD | USD | USD | USD |
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| API | | | | | | | | | | |
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| REST API | Yes | Yes | | | Yes | Yes | Yes | Yes | Yes | Yes |
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| Event API | No | Yes | | | | Yes | No | Yes | Yes | No |
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| Manage contacts though API | | | | | | Yes | | | | |
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| Send email through API | Yes no other choice | Yes | Yes | | Yes | Yes | Yes | Yes | Yes | No |
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| Support | | | | | | | | | | |
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| 24/7 Support | Yes | Yes | | | | Yes | No | No | Yes only for critical incidents | Yes |
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| Dedicated Support Team | Yes | Yes | | | | Yes | No | No | Yes | Yes |
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| Additional | | | | | | | | | | |
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| Launch date | 2011-01-25 | 2007-01-01 | 2010-01-01 | 2009 Oct | 2011-02-02 | 2011-01-26 | 2010-08-16 | 2009-10-21 | 2009-04-28 | 1998 |
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| Emails sent per month | | 500000000 | | 26000000 | | 7000000 | | | 2250000000 | 200000000 |
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| Languages | English, French, German, Japanese, Spanish | English (support in French, English, German, Greek) | English | English | | English, French | English | English | English | English |
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| Website | http://aws.amazon.com/ses/ | http://critsend.com | http://elasticemail.com/ | http://www.jangosmtp.com | http://mailchimp.com/features/simple-transactional-service/ | http://www.mailjet.com | http://postageapp.com | http://postmarkapp.com/ | http://www.sendgrid.com | http://www.smtp.com/ |
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| Last update | 2011-08-27 19:53:04 | 2011-08-27 20:28:48 | 2011-06-03 20:19:44 | 2011-06-03 20:19:44 | 2011-08-27 20:57:02 | 2011-08-27 20:33:14 | 2011-06-03 20:19:44 | 2011-08-27 19:53:04 | 2011-08-27 20:09:19 | 2011-06-27 12:09:16 |
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