Alternatively, online

• Tweeter's "conversely"
• Online backpedaler's intro
• Texter's "Then again"
• "However," on screens
• "But we should consider this": initially
• "Then again," on Twitter
• Texter's "Then again . . ."
• "Then again ...," to a texter
• "However, if u think about it differently..."

Wiktionary Word definitions in Wiktionary
init. (alternative case form of OTOH English)