Android support launched a few weeks ago in v2.5.0, and it's been stable enough that it's time to talk about it properly.
Bulk Texter Pro can now send personalized bulk texts from your own Android phone number, through Google Messages.
iMessage support is here. As of v2.4.1, Bulk Texter Pro can send personalized bulk texts from your own iPhone number — as real iMessages, in the conversations your recipients already have with you.
Photo sending is now publicly available in Bulk Texter Pro, as of v2.1.11. You can attach a photo to a batch and it goes out with every message.